/*
 * Copyright (c) 2025 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
#include <array_test_data.h>

#include <zephyr/ztest.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <zephyr/kernel.h>
#include <audio_defines.h>

uint8_t const test_arr[] = {
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
	0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
	0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c,
	0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
	0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
	0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
	0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
	0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86,
	0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95,
	0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4,
	0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3,
	0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2,
	0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1,
	0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0,
	0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe,
	0xff};

void validate_contin_array(struct net_buf const *const pcm_contin, uint8_t const *const pcm_finite,
			   uint32_t locs_out, uint16_t finite_start, uint16_t finite_end,
			   bool interleaved, bool filled)
{
	struct audio_metadata *meta_contin = net_buf_user_data(pcm_contin);
	uint8_t locations = audio_metadata_num_loc_get(meta_contin);
	int8_t test_byte;
	uint16_t channel_step;
	uint16_t frame_step;
	uint16_t contin_end;
	uint16_t bytes_per_sample;
	uint16_t chan_out;
	uint16_t test_chan_out;
	uint32_t contin_locs;

	if (finite_end) {
		finite_end = finite_end - 1;
	} else {
		finite_end = ARRAY_SIZE(test_arr) - 1;
	}

	bytes_per_sample = meta_contin->carried_bits_per_sample / 8;
	if (interleaved) {
		channel_step = bytes_per_sample * (locations - 1);
		contin_end = (locations * meta_contin->bytes_per_location) - channel_step;
		frame_step = bytes_per_sample;
	} else {
		channel_step = 0;
		contin_end = meta_contin->bytes_per_location;
		frame_step = meta_contin->bytes_per_location;
	}

	zassert_equal(pcm_contin->len, meta_contin->bytes_per_location * locations,
		      "Incorrect continuous array length: %d (%d)", pcm_contin->len,
		      meta_contin->bytes_per_location * locations);

	if (meta_contin->locations == 0 && locs_out == 0) {
		locs_out = 0x00000001;
	} else {
		locs_out &= meta_contin->locations;
	}

	chan_out = 0;
	test_chan_out = 0;
	contin_locs = meta_contin->locations;

	while (contin_locs) {
		/* Test if this is a common location between the output and the finite position.
		 * Test if this location/channel is matching the finite buffer.
		 */
		if (contin_locs & locs_out & 0x01) {
			zassert_equal(pcm_contin->data[frame_step * test_chan_out],
				      pcm_finite[finite_start],
				      "First value 0x%x for channel %d is not 0x%x",
				      pcm_contin->data[frame_step * test_chan_out],
				      test_chan_out + 1, pcm_finite[finite_start]);

			zassert_equal(
				pcm_contin->data[(contin_end + (test_chan_out * frame_step)) - 1],
				pcm_finite[finite_end],
				"Last value 0x%x for channel %d is not 0x%x",
				pcm_contin->data[(contin_end + (test_chan_out * frame_step)) - 1],
				test_chan_out + 1, pcm_finite[finite_end]);

			test_chan_out++;
			chan_out++;
		} else if (contin_locs & 0x01) {
			/* Else if this is just a location in the output and we test that the
			 * location/channel has either 0 or the test value.
			 */
			if (filled) {
				test_byte = CONTIN_TEST_BYTE;
			} else {
				test_byte = 0;
			}

			zassert_equal(pcm_contin->data[frame_step * chan_out], test_byte,
				      "First value 0x%x for channel %d is not 0x%x",
				      pcm_contin->data[bytes_per_sample * chan_out], chan_out + 1,
				      test_byte);

			zassert_equal(pcm_contin->data[(contin_end + (chan_out * frame_step)) - 1],
				      test_byte, "Last value 0x%x for channel %d is not 0x%x",
				      pcm_contin->data[(contin_end + (chan_out * frame_step)) - 1],
				      chan_out + 1, test_byte);
			chan_out++;
		}

		contin_locs >>= 1;
		locs_out >>= 1;
	}
}
